PAC RP4.2-HY12 Radiopro Radio Replacement Interface with Built In Pre-Programmed Steering Wheel Control Does not retain Blue Link. You must use the RP5.2-HY12 to retain Blue Link^n vehicles equipped with auto climate controls, you will lose the fan mode, fan speed, auto status and temperature display. These functions will still work, however you will have no visual confirmations of the settings.^Data controlled accessory and navigation outputs^10A Accessory output